Window fly-screen.



PATBNTED JULY 14, 1903.

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EUNITED STATES Patented July 14, 1903.

PATENT OFFICE.

WINDOW FLY-SCREEN.

SEECEFICATION forming part of Letters Patent No. 733,606, dated July 14, 1903.

Application iiled July 14,1902. Serial No. 115.553. (No model.)

T0 LZ/ whom t may concern.-

Be it known that l, WILLIAM THoMPsoN', lithographer, of the city of Toronto, in the county of York, in the Province of Ontario,- Oanada, have invented certain new and useful Improvements in Vindow Fly-Screens, of which the following' is the specification.

My invention relates to improvements in window iiy-screens; and the object of the invention is to devise a cheap, convenient, and serviceable screen which may be permanently secured to the window frame and sash without interfering when in use or not in use with the free manipulation of the window-sashes and which when the sashes are moved will be automatically adjusted to exactly cover the space uncovered by the opening of the sash; and it consists, essentially, of spring-rollers provided with a screen fabric or mesh secured thereto and designed to be wound and un-V wound therefrom when the sashes are raised or lowered, one of the rollers being supported in suitable bearings at the bottom of the top of the frame vertically above the bottom sash and the mesh wound thereon being connected to the top rail of the upper sash and the other roller being secured in front of the bottom rail of the lower sash and the end of the screen thereof being secured to a cross-bar attached to the sill of the frame, the parts being constructed and arranged in detail, as hereinafter more particularly explained. Y

Figure l is a perspective View of a window comprising upper and lower sashes, showing the screens constructed in accordance with my invention. Fig. 2 is a vertical section. Fig. 3 is an enlarged detail showing the bottom bar andl adjustable bars, whereby the edges of the screen are gripped.- Fig. et is a detail sectional plan view of the lower sash.

In the drawings like letters of reference indicate corresponding parts in each ligure.

A is the top of the frame, B B the sides, and O the sill.

D is the. upper sash, and E the lower sash.

F is a springroller journaled in suitable bearings f beneath the top A of the frame vertically above the lower sash. rllhe roller F has secured to it the screen fabric or mesh,

screen is of course suiiiciently flexible so that it can be readily wound upon the spring-actuated rollers.

The bottom of the screen F is secured to Vthe top rail of the upper sash. Side bars f2, pivoted near the ends, are designed to be thrown to the vertical position when the upper sash has been lowered to a sufficient extent so as to hold the edge of the'screen between such bars and the intermediate guiding-strip b at each side of the frame.

G is a bottom spring-actuated roller which is supported in suitable bearings g, secured near the ends of the bottom rail of the lower sash.

g is a protecting-apron which is secured to the top of the lower sash and extends over the spring-actuated roller G, as indicated.

Upon the spring-actuated roller G is secured the flexible screen gx. The bottom of the screen g is connected to a bar g2, which is provided with recesses g3 at the inner side, and an gle-plates g4, which are secured to the front side of the bar g2 and at the bottom extend to the rear of the recesses g3. The angle-plates gt are provided with slots 2. Bolts 3 extend through the slots into the sill, and

ysuitable thumbfnuts 4 are provided, whereby the plates maybe secured to the sill, it being understood that the thumb-nuts are substantially of the same length as the slots, so that when turned around opposite to them the bottom bar g2 may be removed. The plates g4, it will be noticed, are secured to the crossbar g2, near each end thereof.

g5 represents guiding-plates secured to the front of the cross-bar g2, near each end thereof.

gf represents bars having secured to the bottom thereof the double 'wire bars'gT, one member of which extends to the inside of the bar g2, as indicated, being provided with a turned end, whereby the bars gli may be swungd upwardly at each side, so as to grip the screen at the edges between the guiding-barb and bars g.

Both the bars g and side bars f2, herein-v before referred to, are for the same purposethat is, to grip the edge of the screen and prevent the same being blown in in case of a storm. It is, I find in practice, very seldom necessary to use them.

It will be seen from this description that when the upper sash is lowered the screen is unwound oli the roller F andY closes the space between the top rail of the sash and the top rail of the frame, and it will likewise be Seen that when the bottom sash is raised the screen also closes the space between the bottom rail of the bottom sash and the sill. It will thus be understood that no matter how the sashes maybe raised or lowered the open space will always be covered and prevent the ingress of iies or other insects into the house. To clean the windows, it is not even necessary, unless on upper windows, to unfasten the bottom bars of the screens; but, if desired, of course this may be readily done to Vfacilitate cleaning the windows where it is not possible to reach them from the ground.

In order to prevent the bars f2 from interfering with the movement of the sashes, the upper rail of the lower sash is provided with openings f3 for the passage of the bars f2.

lVhat I claim as my invention isl. In combination with an upper sash, a spring-roller arranged at the top of the runway of the lower sash and a screen secured to the inner side of the upper rail of the upper sash and bearing against the inner side of the parting-strip whereby it lies in the runway of the lower sash, substantially as described.

2. In a window screen, the combination with the upper sash, of a springactuated roller supported in suitable bearings vertically above the lower sash and suitably connected to the top rail of the upper sash and designed to automatically close the space between the top rail of the upper sash and the top of the frame when the upper sash is lowered and side bars secured to the inside of the rail of the upper sash and designed to be swung when the sash is lowered to grip the edge of the screen between the guide-rail and side bars as and for the purpose specified.

3. In combination, the upper and lower sashes, a screen attached to the inner f ace of the upper rail of the upper sash, a screen connected to the outer face of the lower rail of the lower sash, said screens extending along the opposite sides of the parting-strips of the frame, the upper screen bein held in the runway of the lower sash and the lower screen being held in the runway of the upper sash, substantially as described;

4. The combination with the lower sash and a spring-actuated roller having bearings in the ends of the bottom rail thereof, and the screen secured to the springactuated roller at one end and the bar secured to the screen at the opposite end provided with recesses, and means for securing such bar to the sill, of the swinging bars provided with double wire bars secured to same and pivoted in the ends of the main bar, the inner end of the wire bars being designed to actuate the gripping-bars, so as to throw them up and grip the edges of the screen between the side bars and the adjacent guiding-strip of the sash as and for the purpose specified.

5. In combination, a sash, a screen connected thereto at one end, means for securing the screen to the frame at the other end, bars arranged to be swung up on one side of the screen for holding the same and means for operatin g the said bars arranged on the opposite side of the screen from that upon which the bars are located, substantially as described.

6. In combination, a sash, a screen secured thereto at one end, a holding-bar to which the other end of the screen is attached, means for securing said bar to the sill, gripping-bars arranged to be thrown up against the outer side of the sereen,said gripping-bars being` pivoted to the holding-bar and means on the inner side of the screen for operating the grippingbar, substantially as described.

VILLIAM THOMPSON.

Vitnesses:

B. BOYD, R. SHIELDs. 

